dillman



(No Model.) 2 Sheets-Sheet 1.

W. G. DILLMAN.

ANNUNOIATOR.

Patented Sept. 1,1891.

Y nonms PETERG co., moro-urnm, wsumcnou, o, c.

(No Model.) 2 Sheets-Sheet 2.

W. 0. DILLMAN.

ANNUNGIATOR.

No. 458,947. Patented Sept. 1,1891.

VE/VTOI? t/gmwa ATTO/P/VE).

m: uonma areas 00., PNOYD'LIYNO., msmun'run, n c.

NITED STATES PATENT OFFICE.

WVILLIAM O. DILLMAN, OF BROOKLYN, ASSIGNOR TO OlVEN WALSH, OF NEV YORK,N. Y.

ANNUNCIATOR.

SPECIFICATION forming part of Letters Patent No. 458,947, datedSeptember 1, 1891.

Application filed May 6, 1891. Serial No. 391,740. (No model.)

To all whom it may concern.-

Be it known that I, WILLIAM C. DILLMAN, of Brooklyn, in the county ofKings and State of New York, have invented a new and ImprovedAnnunciator, of which the following is a full, clear, and exactdescription.

Myinvention relates to improvements in annunciators such as are used inconnection with speaking-tubes; and the object of my invenro tion is toproducea simple and positive annunciator which is adapted to be operatedfrom the upper end of a tube and which will clearly indicate whichtubeis to be used. It will be noticed that speaking-tubes are usuallyarranged in a building so that they center at a common point, and theannunciators are arranged at this point, so as to tell which tube is tobe used and avoid confusion.

To this end myinvention consists in anannunciatorconstructedsubstantiallyashereinafter described and claimed.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar figures and letters of referenceindicate corresponding parts in all the views.

Figure 1 is a front elevation showing the general arrangement of thedevice. Fig. 2 is a vertical section on the line 2 2 in Fig. 1.

0 Fig. 8 is a rear elevation, partly in section. Fig. 4 is adiagrammatic view showing the electrical connections of the variousparts. Fig. 5 is a vertical section of a modified form of the invention;and Fig. 6 is a rear vertical 55 sectional view on the line 6 6 in Fig.5.

10 represents the wall on which the centered ends of the tubes 11 aresupported, and these tubes branch off to various portions of thebuilding in the usual way. The mouths of the tubes are normally closedby swinging leaves 12, which are pivoted on plates 11, secured to thefront of the main wall 10, and the leaves 12 have near their lower endsand on their inner sides inwardly-extending arms 13, which are bentdownward at their inner ends, as shown at 14, so that the main portionsof the arms will, when the leaves are closed, extend parallel with theplates 11. The upper corners of the arms 13 are cut away, as best shownin Fig. 2, so that in swinging they will clear the contact-bar 15,

which is arranged immediately above them, and pivoted to the lower endsof the arms are contact-blocks 16, said blocks having elongated rearends 17, which extend well upward 5 5 and which are adapted to contactwith the bar 15, as shown in Fig. 5. It will be noticed that theabutting ends of the arms 13 and blocks 10 are cut diagonally, so thatthey will close nicely together, and when the leaves 12 are closed thearms 13 and blocks 16 appear almost like a single piece, as shown inFig. 2.

A circuit-breaking bar 18 is supported on the wall 10 immediately in therear of the blocks 16 when the blocks are in their normal position, saidbar being pivoted at one end,as shown at 19, and the bar is held raisedby a spring 20, one end of which is secured to the wall 10 below thecircuit-breaking bar and the upper end of which is secured to a stud 19on the end of the circuit-breaking bar and in the rear of its pivot. Thecircuitbreaking bar at its free end is recessed slightly on the upperside and is adapted to engage the catch 21 on the upper end of thevertical arm 22,which arm is secured at its lower end to a rod 23,whichextends transverselythrough the wall 10 and terminates at its front endin a button 24., by means of which it is turned. The arm 22 is held sothat the catch 21 will engage the circuit-breaking bar by a spring 25,the upper end of which is secured to the wall 10 and the lower end ofwhich is secured to a stud 26 on one side of the lower end of the armThe current from the battery is sent through this arm 22 and through thecircuit-breaking bar in a manner hereinafter described, and it will beseen that by turning the button 2% and rod 23, so as to remove the arm22 from the circuit-breaking bar 18, the circuit will be broken. The arm22 is held in a vertical position against the stud 26 by a latch :7,which at its rear end is pivoted on the wall 10 and at its forward endpresses against the arm. The upward move 5 ment of the latch is limitedby a stud 2S and it is normally pressed upward by a spring 29, which isarranged beneath it.

An electric bell 30 of common form is arranged adjacent to the lowerends of the tubes and is adapted to be operated by the dropping of aheat 12, as hereinafter described, and the bell is provided with theusual binding-posts 31, by means of which its connections are made. Theconnections and circuits are as follows: From the battery A through thewire Cb, the bell 30, the wire b, the support 32, Wire 0, spring 25, thearm 22, the circuit-breaking bar 18, the spring 20, the wire d, thecontact-bar 15, and when the leaf 12 is dropped through the block 16, anarm 13, a plate 11, the wire 6, a supportingstrip 33, and wire f back tothe battery. It will thus be seen that the plates 11 are connected withone pole of the battery and that the contact-bar 15 is connected withthe opposite pole, and as these parts are not usually in connection thecircuit will be normally broken; but when a plate is dropped the arm 13will swing on the arc of a circle, the block 16 will swing outward fromthe inner end of an arm, as shown in Fig. 5, and will contact with thecontactbar 15, thus closing the circuit, and as the bell is included inthe circuit it will ring until the leaf 12 is again raised or until thebutton 2st is turned, so as to release the catch 21 from the bar 18, andthus break the circuit.

The mechanism above described is adapted to be operated by a person atthe upper end of a tube, and the operation is performed by simplyblowing in the tube, as the force of the wind will cause the leaf at thelower end of the tube to drop; but in Figs. 5 and 6 I have shownelectrical means which may be employed for depressing a leaf. In thiscase the tubes, the leaves, the arms, and blocks are constructed andconnected exactly as described above; but the followi'n g means areemployed for depressing a leaf. An inverted-U- shaped hanger 34 isarranged in the rear of each leaf, and this carries a magnet 35, whichconnects by means of wires 9 and g, a pushbutton 36, and wires h and hwith the battery A. Immediately in front of the magnet 35 is an armature37, which is arranged a little to one side of the arm 13, as shown inFig. 6, and the armature has at its lower end a laterally-extending arm38, which is arranged immediately in front of the bent end 14 of the arm13. It will thus be seen that when the push-button is pressed and thecircuit closed through the magnet the armature 37 will be drawnrearward, and the arm 38, striking the bent end of the arm 13, Willraise the arm and depress the plate 12, to which it is attached. Thismovement closes the circuit through the bell in the manner alreadydescribed.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. An annunciator for speaking-tubes, comprising aswingingleaf supported beneath the mouth of a tube and adapted to closethe latter, said leaf being connected with one pole of a battery, acontact-bar arranged in the rear of the leaf, a bent arm secured to theleaf and adapted to swing beneath the com tact-bar, a contact-blockpivoted to the lower end of the bent arm and adapted to strike thecontact-bar, and an electric bell included in the circuit, substantiallyas described.

2. An annunciator for speaking-tubes, comprising a swingingleafsupported beneath the mouth of a tube and adapted to close the latter,said leaf being connected with one pole of a battery, a contact-bararranged in the rear of the leaf, a bent arm secured to the leaf andadapted to swing beneath the contactbar, a contact-block pivoted to thelower end of the bent arm and adapted to strike the contact-bar, anelectric bell included in the circuit, and a circuit-breaker arranged inthe circuit, substantially as described.

3. The combination, with the drop-leaf, the contact-bar, and the bell,all included in an electric circuit, of the circuit-breaking bar, thespring-pressed arm to engage the bar, and the latch to operate thearm,the bar and arm being included in the circuit, substantially asdescribed.

XVILLIAM (3. DILLMAN.

Witnesses:

\VARREN B. HUTCHINSON, EDGAR TATE.

